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Yeldandi AV, Tan XD, Dwivedi RS, Subbarao V, Smith DD Jr, Scarpelli DG, Rao MS, Reddy JK.Yeldandi AV, et al. Among authors: scarpelli dg.Proc Natl Acad Sci U S A. 1990 Feb;87(3):881-5. doi: 10.1073/pnas.87.3.881.Proc Natl Acad Sci U S A. 1990.PMID: 1689061Free PMC article.